2026 ICD-10-CM Diagnosis Code C65Malignant neoplasm of renal pelvis

ICD-10-CM Codes›C00–D49›C64-C68›C65

ICD-10-CM C65
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C65 is a non-billable ICD-10-CM category code for malignant neoplasm of renal pelvis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C65.1, C65.2, and C65.9.

Code Identity

ICD-10-CM Code
C65
Billable Status
No — Non-Billable Category
Code Describes
Malignant neoplasm of renal pelvis
Chapter
C64-C68
Malignant neoplasms of urinary tract

Code Classification

ChapterC00–D49Neoplasms
SectionC64-C68Malignant neoplasms of urinary tract
CategoryC65Malignant neoplasm of renal pelvis
This CodeC65Malignant neoplasm of renal pelvis

Specific Coding for Malignant neoplasm of renal pelvisOverview

Non-specific codes like C65 require more characters. Use one of these billable codes instead:

  • Use C65.1 for Malignant neoplasm of right renal pelvis

  • Use C65.2 for Malignant neoplasm of left renal pelvis

  • Use C65.9 for Malignant neoplasm of unspecified renal pelvis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • malignant neoplasm of pelviureteric junction
  • malignant neoplasm of renal calyces

Patient EducationClinical

Kidney Cancer

You have two kidneys. They are fist-sized organs on either side of your backbone above your waist. The tubes inside filter and clean your blood, taking out waste products and making urine. Kidney cancer forms in the lining of tiny tubes inside your kidneys.

Read the full article at MedlinePlus

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C65Overview

Is C65 (Malignant neoplasm of renal pelvis) a billable code?

No. This is a category header that groups the codes for malignant neoplasm of renal pelvis, and headers cannot be submitted on claims. Claims for malignant neoplasm of renal pelvis need a more specific code from this category, such as C65.1, C65.2, and C65.9.